What do changes to the NPPF mean for self-builders?
If you’ve been following the planning news recently, you may have heard about the significant changes to the National Planning Policy Framework (NPPF) starting in 2026.
But what does this mean for self-builders?
We've spoken to Helen Needham, Head of Architecture, to get all of the answers.
Development within settlements
The new NPPF places greater emphasis on making effective use of land within existing settlements. In simple terms, this could create more opportunities for suitable sites within villages, towns, and other built-up areas – particularly where a proposal is well-related to the existing settlement and can be accommodated without causing significant harm.
That could include infill opportunities and smaller sites that may previously have been more difficult to bring forward.
Note that these rules only apply to projects in England.
Limited infill outside settlements
The new framework specifically identifies limited infilling within groups of houses as one of the forms of development that can be acceptable outside settlements.
This is particularly interesting for people looking at smaller plots between or alongside existing properties.
But importantly, limited infill doesn't mean that every gap between houses is automatically suitable for development. The following will all need to be considered to see if it is an appropriate site for your project:
- Exact location
- Relationship to neighbouring properties
- Landscape
- Access
- Ecology
- Flood risk
- Local planning policies
“Infill sites within the settlement boundaries should be acknowledged positively as long as there is no substantial harm to the site,” Helen has mentioned.
NPPF Green Belt changes
Green Belt policy has also seen important changes.
The NPPF now gives specific consideration to Grey Belt land, including certain previously developed land and other land which makes a limited contribution to the purposes of the Green Belt.
There are also circumstances where limited infilling in Green Belt villages and the redevelopment of suitable previously developed land can be acceptable.
Again, this doesn't mean that Green Belt development is suddenly unrestricted – there are still very clear tests to meet. But it does mean that some sites which may previously have been considered very challenging could now be worth investigating.
The benefits of a planning application
When considering a planning application, councils give substantial weight to certain benefits, such as:
- Providing new homes
- Making effective use of the land
- Improving energy efficiency
- Delivery innovative and sustainable design
That's particularly relevant to what we do here at Oakwrights.
We're not simply designing beautiful homes – we're designing homes that respond to their surroundings, make good use of their site and can deliver very high levels of energy efficiency and sustainability.
But there is a word of caution.
The changes don't mean that every site will get planning permission.
Flood risk, biodiversity, highways, heritage, landscape and the character of the surrounding area can still be significant considerations – and the new framework sets out circumstances where development should still be refused.
And with the planning system becoming increasingly focused on making the right decisions at the outset, good site assessment and a robust planning strategy are more important than ever.
Speak with us
So, if you're looking at a plot that you think might have potential – perhaps an infill site, a plot within or adjoining a settlement, previously developed land, or even a site affected by Green Belt policy – don't automatically rule it out.
Bring it to us.
Our Architectural and Planning teams can look at the site, understand its constraints and opportunities, and help you establish whether there could be a realistic route forward. Read more about our Architectural Design process in our guide.
The planning landscape is changing – and for the right site, that could create some exciting new opportunities for self-builders.
If you've got a site in mind, we'd love to hear from you.
To find out more, book your design consultation or get in touch with our team.
